Hello, I am 32 years old and have had terrible acne since I was 12 or 13. I have several issues, that I am sure are related to my bad acne. The most alarming are the cists I have been getting, from my scalp to my shins. These cists appear n I can t help but try to pop them, and then sometimes they become hard n reddish/ purpelish, and won t go away.(calcified) I actually had one surgically removed from my scalp, that was the size of a grape. What can I do to stop this. I also have really bad puss build up behind my ears, nasal area, chest, and back. ( when I try to pop the build up, the liquid or substance that comes out is a really stinky odor) Why is this constantly happening?